A Tagging Spree is when someone writes a note/uploads a picture or video etc. on a social networking site like facebook and ends up tagging a lot of people. This can be done for two reasons:
1. You just end up tagging a lot of people
2. You tag a lot of people because you don't want people to feel left out. It's kinda weird.

Person 1: Why do I have so many notifications of facebook?
Person 2: Oh, well you know Bob, he went on a Tagging Spree on all of his pictures and notes of facebook. He said he didn't want any one to feel left out.
Person 1: Thoughtful... but weird.
Person 2: Yeah.